Apparatus for the cooling of beverages



March 26, 1940.

J. F. ZIGLA'R 2,194,582 APPARATUS FOR THE COOLING OF BEVERAGES Filed Aug. 2; 1937 2 Sheefs-Sheet 1 Egj Y 2 j I Janus/T Z/"y/ar IN V EN TOR.

BY 7 am C. (Ac/K6 A TTORNEY 5 March 26, 1940. 4 J. F. ZIGLAR 2,194,532

APPARATUS FOR .THE coonme 0F BEVERAGES BY Jim A TTORNEY Patented Mar. 26, 194i) 1' UNITED sr s 2,194,582 ArrARArns roe THE oooLiNeor an ssz rare BEVERAGES James F. Ziglar, Niagara Falls, N. Y. Applieation August 2, 1937, Serial No. 157,025

3 Claims.

This invention relates to apparatus for cooling liquids and for causing them to circulate in cooled condition. The apparatus which is the subject of this invention is intended more particularly for the cooling and circulating of beverages in hotels, restaurants, ships, and private or public institutions where large quantities of The improved apparatus for circulating liquidsis illustrated by means of the accompanying drawings in which:

Figure 1 is an elevation partly in section illustrating the lower portion of the cooling system; Figure 2 is a horizontal section on the line II-II of Fig. 1; and

Figure 3 is a diagrammatic view illustrating the I circulating system as a whole. l

Referring to the drawings in detail, the lower cooling chamber I has a cylindrical body which is threaded at the top for connection with the screw cap 2 andthreaded at the bottomfor engagement with the cap support 3. The cap 2 has an upper opening which is threaded for engagement with a cooling water conduit I l. The cooling water is continuously cooled by means of a coil in the box 03. The cooled water descends from the box l3 down the conduit H into the lower cooling chamber I and thence by the return conduit Hi which has one leg threaded into the central portion of the cap support 3, a horizontal leg shown in the lower part of Figure 1, and a long vertical return to the tank l3 as shown particularly in Fig. 3. The direction of circulation of the cooling liquid is determined by means of an air jet 8 which is shown particularly in the lower part of Fig. 1. The outlet of this jet is shown as directed to the right. The opening of the jet has a reduced area or a number of fine perforations so that air in the pipe 8, where the pressure is slightly greater than atmospheric, issues in small bubbles which carry the cooling water along the return conduit in the direction it. There is a beverage outflow pipe 1 extend- I -responding pipes 5.

up through the cooling chamber land thencaup BS from the top oi (oi. 62-141) I tively uniform temperatures as compared with the variable temperatures above the surfaceoi the ground. A pressure slightly above. atmospheric pressure is maintained in the receptacles it by means of a corresponding-number 5 of air lines in which the respective pressures are indicated by means of. the gauges I l. Each of these air lines I? hasagas tight connection with the upper portion of the interior of a receptacle ing from near the bottom; of each receptacle up to the cooling chamber l. Each pipe 1] is tightly connected to an upflow pipe 5 as indicated for two of the pipes in Fig. 1. The pairs of pipes to be connected are flanged asindicated at 6 in Fig. 1 ends washer may be inserted between the adjacent ends of the. pipes l and the corresponding pipes 5. The screw caps d are used to tighten the connections between the pipes l and the cor- The beverage pipes 5 extend through the cooling pipe it into the coil box. 13

and from'there to taps 15111 the room onrooms where it is desired'to dispense thebeverages.

The same airsupply can be used to keep the sure and also to maintain. the stream of fine air bubbles from the outlet ,ofnthe small pipe 8 where above into this box'a' gentle flow of air bubblesis seen rising up through the liquid ,in the box the vertical leg of the pipe systemlfl. l

Ordinarily, when the coolingchamber l is installed with its axis in a vertical position: and .it is desired to drain the system of its cooling water, the valve i8 is opened. An outlet for the cooling water may also be placedin the position indicated at 3 in Fig. 3. When the cooling chamber l is from reasons connected with the available space arranged with its axis horizontally disposed, the outlet 9 can be placed as a tap attached to the side of the chamber. Such an attachment is shown in Fig, 1. The tap 9 will, however, not be generally used when the cooling chamber has its axis vertically disposed as indicated in Fig. 1. Both of the taps 9 and It can be used when itjis desired to empty the cooling wat-er'quickly.

In assembling the apparatus shown particularly in Fig. 1 the beverage pipes 5 can first be fitted snugly in corresponding openings in the cap 3. so thatthe-lower edges of the pipes 5 extend approximately to the lower edges of the nipples on 55 beverage liquids in the receptacles it? under presthe cap 3. Sections of the beverage pipes I are then connected tightly to the corresponding ends of the pipes 5 with the aid of the washers and by tightening the nuts 4. It is preferable that the upper ends of the pipes l and the lower ends of the pipes 5 be provided with lateral flanges between which the washers are held tightly. In the case of the pipes 5, they may be inserted in the cap 3 without flanges with their lower edges extending slightly below the lower edges of the nipples in which they fit. The lower edges of the pipes 5 can then be forced tightly against the corresponding nipples by means of a suitable tool. With the aid of washers thepipes I are then clamped on the ends of the pipes 5 by means of the nuts 4 as mentioned above. The threaded cylinder I, the cap 2, and the conduit H can then be successively screwed into place. The remainder of the installation can be completed by ordinary pipe fitting methods. The method of assembly of the applicants installation which has just been described is mentioned by way of example, and it is not intended to convey the impression that this is the only way in which the applicants installation couldbe assembled.

The applicant has found the apparatus described above very eflicient and economical in operation. The temperature of the coolingliquid in the chamber l and in the conduit l l is easily maintained at about 40 Fahrenheit in spite of large changes of temperature outside of the building in which his apparatus is installed.

Such outside temperatures may exceed 100 Fah-' renheit on the sunny side of the building.

The slight flow of air through the vertical leg of the pipe system In in combination with the tendency of the liquid cooled in the coil box to sink downwardly from the coil box toward and through the cooling chamber I makes it possible to maintain the circulation that has been described for an indefinite period at a very small cost. The chamber l affords a reservoir for cooling water near the lowest point of the cooling Water circulation system. The temperature of the water in this chamber l is approximately the temperature at which water has its maximum density. A thermometer is indicated at I2 in Fig. 3 for the use of the operator in measuring the temperature of the cooling water in the conduit II, but it is found in the use of the applicants apparatus that very little control by the operator is necessary. The pipe systems H1 and H are insulated (with a covering of magnesiaasbestos for example) between the coil box l3 and the cold storage room 19. Gauges are shown at H in Fig. 3 for showing the air pressure in each receptacle [6.

A number of variations can be made in the structural details of the applicants installation and in the methods of assembly of the parts without departing from the invention which is defined within the compass of the following claims.

I claim:

1. Apparatus for cooling potable liquids comprising an upper chamber containing a cooling coil, a vertical conduit in which cooling water from said chamber moves downwardly around a plurality of pipes containing potable liquids under pressure, an enlargement of said conduit at its lower end to'form a cold water reservoir surrounding said pipes, a return conduit by which Water that has been used for cooling is passed from said reservoir to said upper chamber, and means for directing a. continuous stream of air bubbles into said return conduit to maintain a continuous circulation of the cooling water.

2. Cooling apparatus for potable liquids comprising a refrigerating chamber disposed above a storage chamber, containers within said storage chamber holding potable liquids under pressure greater than atmospheric, a cold water receptacle constituting an enlarged conduit and disposed S at a height intermediate that of the containers in the storage chamber and of the refrigerating chamber, a circulating system for cooling Water including said receptacle and a connecting conduit for downward flow of the cooling water from the bottomv of the refrigerating chamber to the top of said receptacle, a return conduit for the cooling water from the bottom of the receptacle back to the refrigerating chamber, conduits for the potable liquids extending from respective containers in the storage chamber up through the receptacle and the connecting conduit and through the refrigerating chamber to manually operable taps, and means for injecting air in the form of small bubbles into the return conduit for the cooling water in a direction to maintain a continuous circulation in the same direction.

3. Apparatus for cooling potable liquids comprising an upper chamber containing a cooling coil in which cooling liquid from said chamber moves downwardly around a plurality of pipes containing potable liquids under pressure, an enlargement of said conduit at its lower end to form a cold liquid receptacle surrounding said pipes, a return conduit by which liquid that has been used for cooling said potable liquids is passed from said receptacle to said upper chamber, and means for directing a continuous stream. of gas bubbles into said return conduit to maintain a continuous circulation of the cooling liquid.

JAMES F. ZIGLAR. 

